JPH0465301B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention makes it possible to control the blowout flow from a circular nozzle in any direction, and also to control the blowout flow from a circular nozzle in a direction different from the nozzle flow. The present invention relates to a flow direction control device that blows out flow and is capable of adjusting the flow rate ratio of these blowouts, and is applicable to various air conditioning equipment.

Conventional configurations and their problems Conventionally, there are means to deflect the flow in any direction, but there is only one outlet and it is possible to achieve a desired blowout condition in response to various blowout conditions such as heating, cooling, etc. It wasn't.

Purpose of the Invention In order to solve such conventional problems, the present invention generates a flow from a bypass opening in addition to the blowout flow from the circular nozzle, and makes it possible to control the deflection of the flow from the circular nozzle in any direction. The purpose is to enable adjustment of the flow rate distribution ratio of these two streams.

Structure of the Invention In the present invention, a circular nozzle having a sharp constriction part and a guide wall having a shape in which the channel width gradually increases are provided on the downstream side of the circular nozzle, and by movement of a back pressure shielding plate disposed on the upstream side of the nozzle, Achieve deflection in any direction.
Further, a bypass opening is provided on the outer periphery of the circular nozzle to form a separate blowout flow, and a split flow ratio adjustment mechanism is provided to make it possible to adjust the area of these two openings.

DESCRIPTION OF EMBODIMENTS Next, an embodiment of the present invention will be described with reference to FIGS. 1 to 21.

In FIGS. 1 to 20, 1 is a flow direction control device, 2 is an inlet thereof, and 3 is an outlet thereof.

The inlet section 2 is formed by a cylindrical section 4. A circular nozzle 6 with a sharp constriction part 5 is provided at the inlet part 2.
is held in the cylindrical part 4 by the support part 7. Further, an annular portion formed between the cylindrical portion 4 and the sharp constriction portion 5 serves as a bypass opening 8.
On the downstream side of the circular nozzle 6, a guide wall 9 is formed whose flow path width gradually increases toward the downstream side. In this case, the guide wall 9 has a section 1 having a substantially arc-shaped cross section.
0 and a straight line portion 11 connected thereto. This guide wall 9 has a support section 9'' extending outward from the flange section 9' at its upstream end to support the cylindrical section 4.
It is maintained at

On the upstream side of the circular nozzle 6, a shielding plate 12 having an arcuate cross section is arranged near the circular nozzle 6. This shielding plate is engaged with a shaft 14 by a support portion 13 . The shaft 14 is slidably and rotatably held relative to the cylindrical portion 4 inside a circular hole 17 of a locking portion 16 held by a support portion 15 .

18 is an outer cylinder, and has a bypass outlet 19 around the entire circumference. The outer cylinder 18 is slidable in the direction of the central axis of the outer cylinder 18 while in contact with the outer periphery of the cylinder 4 and the inner periphery of the outlet cylinder 20 provided on the downstream side of the guide wall 9 . 21 is an annular chamber connected from the bypass opening 8 to the bypass outlet 19.

Between the sharply constricted part 5 and the flange part 9',
As shown in FIG. 8, a dividing ratio adjustment mechanism 22 is arranged. The flow dividing ratio adjustment mechanism 22 is made up of a grooved rotary plate 23 and an annular closing portion 24 . This annular closing portion 24 is shown in FIGS. 11 to 13.
It consists of one opening closing plate 25a and five opening closing plates 25b shown in the figure.

The opening closing plate 25a has the same shape as the opening closing plate 25b, has a peripheral edge 26 and a protrusion 27, and has circular arc-shaped elongated holes 28, 2 in the peripheral edge 26.
9, but the only difference is that it has a protrusion 30.

These opening closing plates 25a and 25b are arranged so that six of them form an annular shape as shown in FIG. movably engaged.

As shown in FIGS. 9 and 10, the grooved rotary plate 23 has a disk portion 32 having an outer diameter that is the same as the outer diameter of the sharply constricted portion 5.
, a support portion 33 and a shaft portion 34 . A substantially spiral through groove 35 is formed in the disc portion 32 . This groove 35 has an opening closing plate 2.
The protrusion 30 of 5a passes through, and the protrusion 30
When the through groove 35 is at the A position, the six annularly formed closing plates 25a and 25b close the bypass opening 8, and when it is at the C position, the nozzle part 6 is closed. It's getting old. Further, in the B position, neither the nozzle portion 6 nor the bypass opening 8 is closed.

Next, we will discuss the operation.

As shown in FIG. 14, consider the case where the protrusion 30 of the opening closing plate 25a is set at position B in the groove 35 of the grooved rotating plate 23. At this time, since the annular closing portion 24 is located within the range of the sharp constriction portion 5, neither the circular nozzle 6 nor the bypass opening 8 is closed.

Now, consider the flow within the inlet section 2 with reference to FIG. Among the flows toward the circular nozzle 6, the flow near the center travels straight as shown by _B1 . Regarding the flow around the circular nozzle 6, in the area where the shielding plate 12 is not present, the flow is directly influenced by the sharp constriction part 5 and is directed as shown by _C1 . On the other hand, in the area where the shielding plate 12 exists, the distance l ₁ between the shielding plate 12 and the circular nozzle 6 is small and the flow is obstructed, so that only a weak flow like D ₁ is generated. As a result, the outlet flow of the circular nozzle 6 becomes a deflected flow as indicated by _E1 , which adheres to a portion of the guide wall 9 on the downstream side and is further deflected toward the direction of _F1 .

On the other hand, regarding the flow toward the bypass opening 8,
In the region where the shielding plate 12 is not present, a confluence flow _I 1 of the straight flow G ₁ and the flow H ₁ due to the influence of the rapid constriction portion 5 is generated. On the other hand, in the region where the shielding plate 12 exists, a confluence flow L ₁ of the straight flow J ₁ and a relatively strong flow K ₁ based on the existence of the shielding plate 12 is generated. These flows of I ₁ and L ₁ flow into the annular chamber 21
The flows M ₁ and N ₁ that are made relatively uniform at the bypass outlet 19 and finally flow out of the bypass outlet 19 have approximately equal strength.

Next, the distance h ₂ between the shielding plate 12 and the circular nozzle 6 is
The case where h is made larger than ₁ will be explained with reference to FIG. _The flow in this case is _shown with all the additions ₁ in FIG _. This is almost the same as in the case of . A significant difference occurs in the flow D ₂ passing between the shielding plate 12 and the circular nozzle 6, which is stronger than the flow D ₁ in FIG. 15. Therefore, the flow _E2 passing through the circular nozzle 6 has an increased tendency to move straight as compared to FIG.
The flow will be slightly less deflected. For this reason, the flow
The adhesion effect of E ₂ on the guide wall 9 is reduced compared to the case of FIG. 15, and finally the flow F ₂ is less deflected than F ₁ .

On the other hand, regarding the flow toward the bypass opening, the flow _K2 on the side where the shielding plate 12 is present is slightly weaker than _K1 , but the flow _L2 that merges with the flow _J2 flows into the annular chamber 2.
1, the flows M _{2 and} N ₂ that finally flow out from the bypass outlet 19 are as follows:
The flow is of approximately equal strength similar to M ₁ and N ₁ in Fig. 15. Furthermore, if the distance h ₂ is made sufficiently large, the flow from the circular nozzle 6 will be unaffected by the shielding plate 12 and will proceed straight.

As shown above, the deflection of the flow flowing out from the circular nozzle 6 is determined by the distance h between the shielding plate 12 and the circular nozzle 6.
By changing , the adhesion effect of the flow to the guide wall 9 is controlled, and within the two-dimensional cross section,
It can be deflected in any direction from straight forward to wide-angle deflection. Further, since this flow direction control device is formed axially symmetrically, by rotating the shielding plate 12 around the axis 14, it is possible to deflect the flow direction in any three-dimensional direction.

Further, at this time, the flow from the bypass opening 19 is simply occurring.

Next, as shown in FIG.
Consider the case where the position is set. At this time, the annular closure 24 prevents outflow from the bypass opening 8, so that the flow is emitted only from the circular nozzle 6.

At this time, consider the flow within the inlet section 2 in FIG. 18. Among the flows toward the circular nozzle 6, the flow near the center travels straight as shown by _B3 . Regarding the flow around the circular nozzle 6, in this case, the bypass opening 8
is closed downstream, it is greatly influenced by the back pressure generated by this region and the sharp constriction 5, and is oriented as shown in C ₃ . On the other hand, in the area where the shielding plate 12 exists, the flow is obstructed by back pressure depending on the distance _h3 between the shielding plate 12 and the circular nozzle 6, so when _h3 is relatively small, the flow is weak like _D3 . Only flow occurs. As a result, the exit flow of the circular nozzle 6 becomes a deflected flow as shown in E ₃ .
It attaches to the guide wall on the downstream side and is further deflected, heading in the direction of _F3 .

As explained in FIG. 15, by changing the distance _h3 , the deflection angle can be changed, and by rotating the shielding plate 12, the deflection can be controlled in any direction of 360 degrees with respect to the rotation axis. In this case, since the back pressure generation area upstream of the nozzle 6 is large, the maximum deflection angle when h is set to 0 is the first
It can be larger than in the case of Figure 5 (in the case of two-way blowing). Also, in this case, since the bypass opening 8 is closed, a flow with a higher flow velocity can be obtained compared to the case of FIG. 15.

Next, as shown in FIG. 19, the opening closing plate 25a
Let us consider a case where the protrusion 30 is set at the C position in the groove 35 of the grooved rotating plate 23. At this time,
The annular closure 24 closes off the circular nozzle 6 so that flow only emanates from the bypass opening 8 .

At this time, in FIG. 20, the only flows within the inlet portion 2 are the peripheral flows G ₄ and J ₄ toward the bypass opening 8. These flows are made relatively uniform in the annular chamber 21 and finally reach the bypass outlet 1.
Flows M ₄ and N ₄ flowing out from 9 become flows of approximately equal strength.

In this case, since the circular nozzle 6 is closed, a flow with a higher velocity can be obtained compared to the case of FIG. 15 (bidirectional blowing).

As described above, the annular closing portion 24 and the circular nozzle 6,
Although the case where both bypass openings 8 are opened and the case where only one of them is opened has been described,
As can be seen from the structure of the dividing ratio adjustment mechanism 22, the rotation of the grooved rotary plate 23 causes the opening closing plate 25a to
By setting the protrusion 30 at any position in the process from A to B to C of the through groove 35, it is possible to arbitrarily change the division ratio to the circular nozzle 6 and the bypass opening 8 in accordance with the position. It is possible.

Next, regarding the case where the outer cylinder 18 is moved in the axial direction and the opening area of the bypass outlet 19 is reduced,
Figure 21 will be described.

FIG. 21 shows a case where it is desired to put the annular closing portion 24 in the same state as in FIG. 20 (circular nozzle 6 is closed). The flow inside the inlet section 2 is the same as in the case shown in Fig. 20, but since the area between the bypass outlet 19 becomes smaller, the flow velocity of the flows M ₅ and N ₅ flowing out from this increases, and the flow reaches a higher level. It is possible to obtain a flow over a long distance.

Effect of the invention According to the present invention, the following effects can be obtained.

(1) By using the separation ratio adjustment mechanism, the flow rate from the circular nozzle and bypass outlet can be arbitrarily adjusted to obtain various flow conditions.

(2) By making the opening area of the bypass outlet adjustable, the distance that the flow reaches from the bypass outlet can be changed.

In addition, when such an outlet is applied to the outlet of an air conditioner, it becomes possible to separate the flow such as downward blow during heating and horizontal blow during cooling, as well as a combination of these flows, and among others. ,
As for the downward flow, the flow direction can be controlled in any direction, which greatly improves comfort.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a flow direction control device showing an embodiment of the present invention, FIG. 2 is a vertical sectional view thereof, FIG. 3 is a sectional view taken along line A-A' in FIG. 2, and FIG. B in Figure 2
-B' line sectional view, Fig. 5 is a C-C' line sectional view of Fig. 2, Fig. 6 is a perspective view of the shielding plate, Fig. 7 is a perspective view of the outer cylinder, Fig. 8 is flow dividing ratio adjustment. A partial sectional view of the device, FIG. 9 is a plan view of the grooved rotating plate, FIG. 10 is a sectional view taken along line D-D' in FIG. Fig. 11 is a side view, Fig. 13 is a plan view of the opening closing plate, Fig. 14 is a plan view of the annular closure part, Fig. 15 is a vertical sectional view showing the flow state corresponding to Fig. 14, and Fig. 16 is a plan view of the opening closing plate. Vertical sectional views showing different flow conditions when the distance between the shielding plate and the circular nozzle is changed, FIG. 17 is a plan view showing different settings of the annular closure, and FIG. 18 shows the flow conditions corresponding to FIG. 17. 19 is a plan view showing a further different setting state of the annular closure part; FIG. 20 is a vertical sectional view showing a flow state corresponding to FIG. 19;
FIG. 21 is a vertical sectional view showing the flow state when the area of the bypass outlet is changed. 1... Flow direction control device, 2... Inlet section, 3...
...Exit part, 5...Rapid constriction part, 6...Circular nozzle, 8...Bypass opening, 9...Guide wall, 12...
...shielding plate, 18... outer cylinder (bypass outlet area adjustment means), 19... bypass outlet, 22...
...Diversion ratio adjustment mechanism.

Claims (1)

[Scope of Claims] 1. A circular nozzle having an inlet and an outlet, the inlet being provided with a circular nozzle having a sharp constriction, and a bypass opening located on the outer periphery of the circular nozzle, and downstream of the nozzle. A guide wall is provided in which the flow path width gradually increases toward the downstream side, and a shielding plate is provided on the upstream side of the nozzle to block a part of the inward flow generated by the sharp constriction part, and by the movement of this shielding plate, The adhesion effect of the flow blown out from the nozzle to the guide wall can be controlled, and a bypass outlet for blowing out the flow from the bypass opening is provided on the outer periphery of the nozzle, and the flow rate ratio to the nozzle and the bypass opening is controlled. A flow direction control device equipped with a diversion ratio adjustment mechanism that changes the flow direction. 2. The flow direction control device according to claim 1, which is provided with means for adjusting the area of the bypass outlet.